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Extension of Glass‐Forming Region in a ZrF 4 ‐Based System by Rapid Melt Quenching
Author(s) -
Ahlf Dierk,
Frischat Guenther H.
Publication year - 1989
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1989.tb07690.x
Subject(s) - quenching (fluorescence) , materials science , analytical chemistry (journal) , metallurgy , mineralogy , thermodynamics , chemistry , fluorescence , optics , chromatography , physics
It was shown that rapid melt quenching can extend the glass‐forming region of a ZrF 4 –BaF 2 –YF 3 –AlF 3 composition considerably. Cooling at a rate of ∼10 2 K · s −1 prevented glass formation at compositions less than about 25 mol% BaF 2 , whereas quenching at a rate of ∼2×10 6 K · s −1 resulted in glasses with a BaF 2 content as low as about 13 mol%. This high quenching rate was achieved by a specially designed twin‐roller apparatus.